Congress in Data

Congressindata provides users with information about the characteristics of US Congress Members, their legislative activities, and their social connections over five US Congress cycles: from the 109th to the 113th (2005 – 2015). Information is obtained by elaborating and harmonizing different sources of public data.

The data sources used by are: the Biographical Directory of the United States Congress, the Congressional Bills Project, the Charles Stewart’s Congressional Data Page, the Digital Boundary Definitions of United States Congressional Districts, James Fowler’s personal webpage, the Legislative Effectiveness Project, the Office of Clerk of the U.S. House of Representatives, the Policy Agendas Project, the Sunlight Foundation, Voteview. Additional details about our data are provided in the section “Data download“.

The core team working on is presented in the section “Team“.

The complete list of scientific articles produced using the resources from is presented in the section “Publications“. If your work with data from this website, and the outcome of your research is published, please let us know, and we will add it to this list.

We welcome feedback, questions, and media enquiries concerning this project.